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Chapter 2: Pop.
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Term | Definition |
---|---|
Poupulation Density | The number of people that live in a given area of land. |
Arithmetic (Crude) Density | Total number of people divided by total land area. |
Physiological Population Density | Number of people per unit of area sustainable for agriculture. |
Arable Land | Land suited for agriculture. |
Population Pyramid | Population displayed by age & gender on a bar graph. |
Overpopulation | Circumstance for too many people for the land to support. |
Carrying Capacity | Number of people an area can support on a sustained basis. |
Doubling Rate | Length of time needed to double a population. |
Population Explosion | A sudden increase in the population |
Zero Population Growth | When crude birth rate equals crude death rate and natural increase rate approaches zero. |
Demographic Momentum | Tendency for growing population to continue growing after a fertility decline because of their young age distribution. This is important because once this happens a country moves to a different stage in the demographic transition model. |
Natural Increase | Population growth measured as the excess of live births over deaths; does not reflect either emigrant or immigrant movements. |
Demographic Transition Model | The steps through which a society progresses. 1- low growth. 2- high. 3- moderate. 4- low. |
Demographic Equation | NIR = CBR - CDR |